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- W2351299283 abstract "LA-ICP-MS U-Pb age and trace elements composition have been conducted from 111 spots analyses on detrital zircons from the sandstone of the lower Nanhua-Sinian Quanji Group, the unmetamorphosed sedimentary cover on the Quanji massif (a continental fragment separated from the Tarim block). The age spectra from 87 concordant ages records strong ~2.45, ~2.32, ~2.11 and ~1.95 Ga thermal events in the Paleoproterozoic and two weak thermal events in the Neoarchean time, and indicates that sediments of quartzo-sandstone were derived from the basement comprising of the Dakendaban Group and Delingha complex with unexposed Ended-Paleoproterozoic mafic dike swarm in the middle to eastern Quanji massif. CL images and trace elements of the detrital zircons suggest that the ~2.45, ~2.32 and ~2.11 Ga thermal events are characterized by magmatic intrusion along with crustal growth and the ~1.95 Ga event by strong regional metamorphism and anatexis, with magmatic intrusion a possible event that could not be ruled out. Our new data demonstrate that basement of the Quanji massif and its inherited Tarim craton are mainly composed of Paleoproterozoic rocks, however, they regionally developed magmatic intrusions accompanying crustal growth during ~2.32-2.45 Ga, thus share a similar geological evolution history or probably ever interacted with the North China craton in their early history." @default.
- W2351299283 created "2016-06-24" @default.
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- W2351299283 date "2012-01-01" @default.
- W2351299283 modified "2023-09-23" @default.
- W2351299283 title "U-Pb Age Spectra and Trace Elements of Detrital Zircon from Quanji Group: Implications for Thermal Events and Early Evolution in the Basement" @default.
- W2351299283 hasPublicationYear "2012" @default.
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